<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>下单</h1></body></br>
<form action="/placeOrder">
    <input type="text" name="productName">
    <input type="submit" value="下单">
</form>
</body>
</html>